Senior React Native Developer — VoIP / WebRTC SDK Integration (Urgent Project)

@ixorawebmob

Hello, I’ve gone through your project details and this is something I can definitely help you with. With over 10 years of experience in mobile app development, I have a strong proficiency in React Native, VoIP integration, and WebRTC, including SIP.js. I understand the intricacies of integrating a VoIP SDK and have successfully implemented similar features in previous projects, ensuring stability and performance. Here is my portfolio for your reference: https://www.freelancer.in/u/ixorawebmob. I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: What specific features do you want prioritized for the VoIP calling SDK integration? Let’s discuss over chat! Regards, Arpit Jaiswal

@gaurangdev

Hello There, I hope you are doing well! I am a Senior React Native Developer and I have solid experience building React Native applications that involve native module bridging, background services, push-based call flows, and real-time communication layers. I’ve worked with WebRTC-style integrations and performance-sensitive features where call stability and lifecycle handling are critical. I’m comfortable packaging SDK-level code with clean documentation so your team can extend it easily. I can start immediately and focus on delivering a stable, production-ready VoIP layer quickly without overengineering. Happy to review your current codebase and align on milestones. Answers: => Yes, I’ve built real-time communication features; I can share details privately => Yes, I have hands-on WebRTC integration experience => Yes, I have created reusable RN modules/SDK-style components => Yes, I am available to start now => Timeline: ~1–2 weeks depending on SDK complexity Let’s discuss architecture and get the first milestone moving. When can we connect? Thanks & Regards.

@rmethaniya

Hi, I’m Ravindra. I have solid React Native experience and have worked on VoIP-style integrations involving WebRTC, SIP signaling, push-based incoming calls, and background handling on both iOS and Android. I understand that this kind of work is mostly about stability and lifecycle management, not just wiring up an SDK. Answers: - Yes, I’ve worked on calling-enabled apps (details available on request). - Yes, experience with WebRTC and SIP-based flows. - Yes, I’ve built React Native native modules. - I can start immediately. - Estimated 2–3 weeks depending on current state. Happy to review your existing codebase and discuss next steps.

@hireageek

Hi there, I've carefully read your project requirements and I'm confident that I can deliver exactly what you're looking for. As a top freelancer in California with over 5 years of experience in React Native and specific expertise in VoIP and WebRTC integrations, I understand the urgency and technical depth involved in your project. My background in developing native modules and handling push notifications sets me apart, ensuring that I can effectively integrate the VoIP SDK into your existing application. I have successfully completed similar projects in the past, focusing on both performance tuning and user experience. I can start immediately and aim to deliver within your timeline preferences. I’m excited to dive in and collaborate with your team while you handle the back-end infrastructure. Could you please clarify if you have any existing documentation for the VoIP SDK you want to integrate? What existing documentation or resources do you have for the VoIP SDK integration?

@jagratip3

Hello I’m a senior React Native developer with solid experience in VoIP, WebRTC, and SIP-based mobile calling solutions. I understand this is SDK-level work, not just UI app development, and I’m confident I can deliver a stable and production-ready integration quickly. I have worked on real-time communication apps where I implemented inbound/outbound calling, push-driven incoming calls, background handling, reconnection strategies, and performance optimization across both iOS and Android. I’m comfortable working alongside OpenSIPS/SBC and backend API teams while owning the complete mobile SDK layer, including native bridges and packaging. Answers to your questions: Yes — I’ve built VoIP apps and custom dialer solutions (can share details privately). Yes — strong hands-on experience with WebRTC and SIP signaling flows. Yes — I’ve developed reusable React Native modules/SDK components. I can start immediately. Initial integration typically takes 1–2 weeks depending on edge cases and testing. If you’re looking for someone who understands call lifecycle reliability, OS restrictions, and production stability, I’d be happy to help. Let’s discuss the architecture and timelines. Best regards Jagrati.

@krisk63

Hi there, I’m Kristopher Kramer from McKinney, Texas. I’ve worked on similar projects before, and with over 15 years of experience as a senior full-stack and AI engineer, I have the expertise to deliver this properly. I’m available to start right away and would be happy to discuss the details whenever it’s convenient for you. I look forward to speaking with you. Best regards, Kristopher Kramer

@moha262

Hello! After reviewing your post, I believe my VoIP, Software Development, Telecommunications Engineering, Telecoms Engineering, SIP, React Native and Telecom skills are a great fit for your project. I have the expertise you need for your project and am confident I can successfully complete it. With 9 years of practical experience, I will meet your deadlines and deliver flawless results. I would like to discuss your project with you in a specific question and answer format. I look forward to hearing from you anytime. Thank you, Moh A.

@borisdeveloper71

Hi there, With my strong background in VoIP, Telecommunications Engineering, Software Development, Telecoms Engineering, React Native, Telecom, SIP, I will work diligently until you are completely satisfied with the final outcome. I’m confident in my ability to deliver this project to a high standard. I take the time to carefully review each client’s requirements to ensure I fully understand the scope before submitting a proposal. Every project deserves a thoughtful, tailored approach, and I treat each one with the attention it deserves. I have solid experience in this field and would welcome the opportunity to discuss your project in more detail to better understand your goals and expectations. Clear communication and understanding are always my top priorities. I am available to start immediately and am committed to delivering high-quality results on time. I look forward to the opportunity to collaborate with you. Thank you for your time and consideration. Best regards, Boris

@kishanbwts

I have integrated React Native apps with SIP.js-based VoIP calling before, including inbound/outbound call flows, push notifications, and background handling on both iOS and Android. One project required building a custom React Native SDK layer that bridged native modules to ensure stable call connections and smooth UI transitions, similar to what you need. To get started, I’d ask which VoIP SDK you want to extend and if you have existing native modules to build on or if we’ll create those from scratch. Also, do you have sample calls or a test environment for quick iteration? Based on past experience, the basic integration and call UI could be ready in about 2 weeks, with another week for stability and packaging the SDK with docs. I’m ready to start immediately and focus on shipping a reliable, performant React Native VoIP SDK layer for your app. Let’s get this working smoothly.

@PrateekP3003

Hi There! I’ve reviewed your requirement for integrating a VoIP calling SDK into your existing React Native app with WebRTC/SIP, push-based incoming calls, and background handling. You need someone who can work at SDK level, not just app features. Right? I have solid experience building real-time communication features in React Native, including VoIP-style flows, push-triggered call screens, and native module bridging. I can own the React Native SDK layer and deliver a stable, well-documented integration that works smoothly with your OpenSIPS and API stack. I’m ready to help with: VoIP SDK Integration React Native layer around SIP/WebRTC Configurable dialing & call state logic Reusable SDK-style structure Call Handling Inbound/outbound flows Push-based incoming calls Background/terminated-state handling Clean, responsive call UI Performance & Stability Audio focus handling Network recovery logic Testing across iOS/Android devices Answers: Yes, worked on calling/messaging features (details in chat) Yes, WebRTC-based integrations Yes, custom RN modules/SDK-style components Yes, can start immediately Initial version in ~2–4 weeks depending on scope Let’s chat to review your current codebase and timeline.

@generosoiii

Hi, I have extensive React Native and real VoIP/WebRTC integration experience, and I can quickly implement your SIP.js-based calling workflow with stable SDK-level architecture. I will deliver a clean React Native SDK layer with call UI, background handling, and native bridges as needed. Do you have any preferred VoIP SDK behavior or UI flow that I should align with before integration begins? Best regards, Generoso

@jeric5g

Hi there, I’ve reviewed your urgent VoIP/WebRTC integration needs and I’m confident I can bridge the RN SDK with robust SIP/WebRTC handling, including inbound/outbound calls, push-based wakeups, and background behavior on iOS and Android. I’ve done native bridge work and SDK packaging before, focusing on stable call quality, low latency, and clear API surfaces for future extension. My approach is to implement a lean RN SDK layer that delegates to a tested native module, with careful lifecycle management and thorough testing around push and background modes. Documentation will cover setup, extension points, and a ready-to-use sample app. Design a unique question about the project's specifics to involve the client, tone should be Clever and Energetically, English Best regards, Jeric Gonzales

@Ahmedh058

Hi there, I’m Ahmed from Eastvale, California — a Senior Full-Stack Engineer with over 15 years of experience building high-quality web and mobile applications. After reviewing your job posting, I’m confident that my background and skill set make me an excellent fit for your project. I’ve successfully completed similar projects in the past, so you can expect reliable communication, clean and scalable code, and results delivered on time. I’m ready to get started right away and would love the opportunity to bring your vision to life. Looking forward to working with you. Best regards, Ahmed Hassan

@QuickMentor

Senior React Native Developer — VoIP / WebRTC SDK Integration (Urgent Project) I'm excited after reviewing your project details! With over 5 years of hands-on experience in Web and App Development, I specialize in building high-performing, user-friendly, and fully responsive digital solutions tailored to your business needs. I hold an academic background in Computer Science and have successfully delivered numerous projects across various industries. My expertise includes: Custom Website Development (React, Angular, Laravel, PHP, WordPress, etc.) Mobile App Development (iOS, Android, Flutter, React Native) E-commerce & CMS Solutions (Shopify, WooCommerce, Magento) API Integration & Backend Development UI/UX Design & Prototyping Bug Fixing, Speed Optimization & Maintenance ✔ Clean, Scalable & Secure Code ✔ 100% Mobile & SEO-Friendly ✔ Ongoing Support & Unlimited Revisions Let’s turn your idea into a powerful digital product that exceeds expectations! Check my profile: https://www.freelancer.com/u/QuickMentor Looking forward to working with you!

@karimrattani

Hi , I prefer not to use auto bidding because I believe every project deserves a thoughtful and personalized approach. I would really appreciate the opportunity to discuss your project, "Senior React Native Developer — VoIP / WebRTC SDK Integration (Urgent Project)", in more detail. Based on what you have shared, I am confident my background aligns well with what you are looking to achieve. My name is Karim Rattani, a U.S. based technology and creative consultant specializing in web design, web development, mobile app design, and UI UX solutions. I help businesses turn ideas into polished digital products by focusing on clean design, strong usability, and scalable development that delivers real results. When you work with me, you can expect clear communication, custom tailored design and development solutions, and revisions until you are fully satisfied. All final assets are delivered in professional formats, with original work and full ownership rights included. You can view my portfolio here: https://www.freelancer.com/u/karimrattani Thank you for considering my proposal. I would be happy to connect and discuss your project requirements, timeline, and goals in detail. Best regards, Karim Rattani

@mugencodes

Hello , hope all is good. I have read the details you shared and I understand the outcome you want. I am an expert with 10+ years of experience in Software Development, React Native and I helped many clients reach their goals. Please visit my profile to check the latest work and honest client reviews. If you like my approach, please connect in chat. Regards, Jayabrata Bhaduri

@Apurva510

Hello, I read with interest your job posting, and I believe I possess the necessary skills and experience you are seeking to get the stuff done. I am a professional computer programmer with knowledge of various programming languages like HTML5, CSS3, React.js, Vue.js, Wordpress, Shopify, PHP/Laravel, JavaScript, Node.js/Express, blockchain technology, cryptocurrency, Python, MySQL, Dart, and Flutter. I have developed more than fifty web applications. I look forward to speaking with you further regarding your available work. I can assure you that if you work with me once, you will always work with me for this kind of project: I will do whatever it takes to completely 100% deliver on any of your projects and earn a 5-star rating from you as well. I am keen to take this discussion forward. Please let me know the next step call/chat/interview; I will make myself available at a mutually convenient time.  Yours sincerely, Apurva Sharma

@riponsk4773

Hello, We have already developed a complete dating app using WebRTC, built fully in React Native from scratch, where users can make smooth 1-to-1 high-quality audio and video calls with no call drops. If you’d like, I can share a live demo with you. You can also check my portfolio where I’ve uploaded the Hiddo Dating App project. Additionally, we will provide a completely free TURN server to ensure stable connectivity and better call performance. Let’s connect and discuss your requirements. Thank you!